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This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
1. |
Heat transfer takes place as per ______________ |
A. | Zeroth law of thermodynamics |
B. | First law of thermodynamics |
C. | Second law of thermodynamics |
D. | Kirchoff s law |
Answer» D. Kirchoff s law | |
2. |
Which is the fastest mode of transfer of heat? |
A. | Conduction |
B. | Convection |
C. | Scattering |
D. | Radiation |
Answer» E. | |
3. |
Convection is faster than conduction? |
A. | True |
B. | False |
Answer» B. False | |
4. |
In a wetted-wall tower, an air-H2S mixture is flowing by a film of water which is flowing as a thin film down a vertical plate. The H2S is being absorbed from the air to the water at a total pressure of 1.50 atm abs and 30oC. The value of kc of 9.567 10-4 m/s has been predicted for the gas-phase mass-transfer coefficient. At a given point the mole fraction of H2S in the liquid at the liquid-gas interface is 2.0 10-5 and pA of H2S in the gas is 0.05 atm. The Henry s law equilibrium relation is pA(atm) = 609xA (mole fraction in liquid). Calculate the rate of absorption of H2S. |
A. | 1.480 10<sup>-3</sup> kmol/m<sup>2</sup>.s |
B. | 1.486 10<sup>-3</sup> kmol/m<sup>2</sup>.s |
C. | 1.485 10<sup>-3</sup> kmol/m<sup>2</sup>.s |
D. | 1.487 10<sup>-3</sup> kmol/m<sup>2</sup>.s |
Answer» C. 1.485 10<sup>-3</sup> kmol/m<sup>2</sup>.s | |
5. |
Convection does not occur in _______________ |
A. | Solid |
B. | Liquid |
C. | Gas |
D. | Molten Solid |
Answer» B. Liquid | |